Development of Gravity Theories in the View of TRAPPIST-1e

Author: Wang, Nan; Lu, Lu-Yao; Liu, Hui-Gen; Chen, An-Dong; Lu, Tiger; Cui, Ao-Ran; Wang, Jun-Kai.

Published in Research in Astronomy and Astrophysics, 2025

Summary: From a TRAPPIST-1e observer’s viewpoint, N-body integrations generate ephemerides and observable sky phenomena to assess what “discovering gravity” looks like in a compact exoplanet system; Keplerian regularities are readily testable, while relativistic effects (e.g., perihelion precession) are too small to stand out, suggesting GR would be hard to infer locally.